Railway-tie plate.



JPR. KELLER. RAILWAY TIE PLATE. APPLIOATION FILED AUG. 21, 1907.

Patented Dec. 8, 1908.

2 SHEETS-SHEET 1.

FIG. 2

WITNESSES.

J. R. KELLER.

RAILWAY TIE PLATE.

APPLICATION FILED AUG. 21, 1907.

Patented Dec. s, 1908.

2 8HEETS -SHEET 2.

FIG. 3

HG. 4 I FIG. 5

.VW//////// //3 V/// -fl1 V F V UNITED STATES PATEnTo FIoE. Join: a.- min mum PENNSYLVANIA. nmwAY-rm PLATIL,

No. eoaoas.

Patented Dee's, 190s.

Application filed AW 81, 1907. florid Ne. 889,565).

To all whom it may concern:

Be it known that I, JOHN R. KELLER, a

resident of Pittsburg, in the county of Alle gheny and State of Pennsylvania, have in- Railway-Tie Plates; and I clare the followin v exact description t ereof.

My invention relates to-railway tie-plates and-its object is to provide a tie-plate which is so constructed that it will not rock on its center, and which'can be easily seated and held against longitudinal and lateral movement on the'tie, and which can be easily and cheaply manufactured.

Tie-plates commonly in use have not been found wholly satisfactory'because of their tendency to move and rock-on the tie under trafiic, thus forming an unstable bearing for the rail, with a consequent loosening and wear of the rail holding'xspikes and destruction of the fibers of t e ti whereby the oint of support for the rai is weakened. ie-plates with various forms of means forattaching, them to the tieto .plreventtheae difiiculties'havebeen devised, e revailing form being those with claws or an son their lower surfaces ada ted to be riven into the tie either parallel or transverse with the grainof the wood. In the longitudinal flfiang'e construction with flangea'of uniform-depth,the rolling action and'vilir'a tions' of the "rail cause the plate to rock on. its center and 1 ends to cut into the fibers of thet'ie, and ear and loosen the spikes, and if deep flanges. are employed, there is liability. to split arid check the tie beyond .the ends of the plate, allowgg moisture to.

getinto-and decay the tie.

4o .the fibers'of the tie are severed in seatin the: plate, which causes decay. It has also can .ith the use of ang'es or claws transversely of the plate,

ound that the continued pounding or impin 'ing of.the railon the plate through tralhc will soon causethe flanges to form en- I larged groovesand compact the fibers of the tiesothat there is not rsufiicient friction between the wood and the flanges to hold the late; a ainst movement. These special orms o; tie-plates are diflicultand expensive to manufacture, especially those rolled or steel requiring special rolls andmany'.

gasses through the rolls to break'gdfown the' illet andjorm the flanges, making th'e' labor the tie, an

Fig.1; Fig. 6 is a plate; and Fig.

cost large. A form of tie-plate that .can be made cheager'andmiaihtainits position on of sufiicient stren h to support the rail properly, is therefor'e, esirable. My

invention is designed to provide a tie-plate which will prevent these di-fliculties, and

which can be easily and cheaply manufac tured from flat plate, andhave all. theadvantages ofthe special rolled andimorc exadvantages.

The invention comprises a plate such as hereinafter described and claimed.

In the accompanying drawings Fi is a perspective view 0 the tie-plate;

pensive forms of plates, besides several other i is a similar view showing the plate inverted;

Fig. 3 is a vertical section taken transversely through the rail and longitudinally of the tie showing the tie-plate in elevation between the base of the railand tie; Fig. 4 is across-section on the line 4-4 of Fig. 1; Fig. 5 is a cross section on the line 5-5 of rspective view showin ied to a top shouldere is a perspective bottom 'view of another form of plate.

My inventioh'in-itspreferred form comrises a flat body Iportion 1, althou h this y portionn ay e corru ated, rib ed, or any desired cross section, an ofany suitable thickness, but I prefer to make the body portion flat, afio ing large surface contact with the railand tie, and requiring no special form of rolls to form the plate, but the manufacturer can 'buy flat late of the reui'r'ed width and gage on t e open market, cm which the late is formed. The body portion is rovi eeiving ho 2,

the invention app unched to meet the require 'ments of the di erent railroads, and usually just outside of the rail-base zone and diagonally on the plate. Throu h these holes are driven the rail-holding spi s 3, asshown in 3, adapted to receive the lateral thrust of the rail under trailic, the outside wall of the'hole providing a backing for the with the usual spike re-- rel spike in absence of a top flange or shoulder in the late,-such a shoulder being shown at 11 in ig. 6. It is essential that in absence .of a shoulder or like means, the plate should be held against longitudinal movement on the tie to properly support the spike to re- $ist the thrust of the rail and it has been that the form of flanges now (3111- a resiliency of the fibers. The body portion of "the plate is provided with depending flanges 5, preferably located at the sides of the plate and extending longitudinally of the plate. If desirable, these flanges may be of thickness their full depth equal to the thickness .of the body portion, but I refer to bevel or scarf the outside face of t e flanges as at 6 to facilitate the insertion of the flanges in the tie, and having the inside faces 7 of the flanges vertical or at right angles to the plane of the body portion, which provides against rupture of the ,fibers between the v flanges under the body portion. If desirable to use a cast or forged plate of thinv cross section, requiring reinfoicement against buckling, intermediate flanges 5 may be used as shown in Fig. 7. In order to prevent the rockin of the plate on its transverse center, the

anges are arranged with oppositel diverging flat bottom edges 8, having t eir extreme depth at the ends of the plate, as at 9, and gradually reducing in depth to a point at the center and bottom surface of the plate, as at 10. These flat bottom edges of the flanges are at right angles to the inner vertical faces of the flanges. The cutting away of the flange at its center not only prevents the rockin of the plate, but also prevents movement 0 p the plate 19nggtudinally of the tie, as it is obvious that t e wood between the inclined flatbottom edges 8 of the flan es must be displaced or the'plate raised a ove this obstruction in order to move longitudinally on the tie. The flat inclined surfaces 8- prevent the flange from cutting into the tie under lateral stresses applied to the rail, and hence provide eflicient-means for holding. the plate against movement longitudinally of the tie. As the plate settles into the tie, it maintains its position against movement in either direction longitudinally, as the wood is compressed between the inclined flat bottom edges of the flanges. The plate not only provides flanges easy to embed and hold the plate against movement, but in. addition, reinforce the plate at a point subject to bucklin strains. These flanges are of only slight epth undern'eaththe rail base and hence mutilate the wood as little as possible at the point where the load'is applied. Since the, inner' faces of the flan es are vertical, the'cutting-of such flanges t rough the fiber forms a vertical shear on the portion underneath the plate and therefore distorts and destroys the fiber of the wood under the plate very little: This is important, as it eaves the solid wood underneath the plate where the load is applied. The deep outer ends of the flanges form prongswhich embed themselves in the tie and hold the plate from'rising. These prongs are removed as far as possible from the edges of the rail base an hence entirely overcome any tendensiyil of the plate to rock.

e preferred form .of plate described is ends of the plate.

2 A tie plate comprising a body portion having on its lower face flanges adapted to engage the tie, said flanges having their lower ed es inclined from the center and bottom sur ace of the late to their extreme depth at theends 0 the plate and having vertical end faces.

3. A tie plate comprising a body portion having on its side edges tie engaging flanges increasing in depth from the center of the slateoutwardly and having their extreme epth at the ends of the plate, said flanges having theirinner faces at ri ht angles to the plane of the body portion 0 theplate.

4. A tie plate comprising a body portion having on its side edges tie engaging flanges increasing'in depth from the center of the plate outwardly and having their extreme depth at the ends of the plate, saidrflanges having their inner faces at right angles to the plane of the body ortion of the plate and havin' outside beve ed faces.

5. 1% tie plate comprising a body portion having on its side edges tie engaging flanges increasing in depth from the center of the late outwardly and having their extreme depth at the ends of the plate, said flanges having their inner faces at right angles to the plane of the body portion of the late, and having their lower edges fiat an atright angles to said inner vertical faces. ,f 6. A tie plate comprising a body portion having on its lower faces flanges adapted to engage the tie, said flanges having their lower edges diverging in opposite directions longitudinally, said lower edges transversely requiring of the flanges being-substantially parallel to the plane of the body of the plate.

7. A tie plate comprising a body portion having on its lower surface flanges for entering the-tie, said flanges increasing in depth from the center of the plate outwardly and flanges having fiat bottom edges and vertical having their extreme depth at the ends of the end faces. 10 plate and having fiat. Ion- 01 edges. In testimony whereof. I, the said JOHN R.

S. A tie phxte comprising;- a body portion KELLE1z,1m\'e hereunto set my hand. 5 having on its lower surface tie engaging j JOHN 1i. KELLER.

flanges increasing in depth from the center I \Vitnesses: of-the plate outwardly and having their ex- C. E. "Rum-31:5 treme depth at the ends of the plate, said I M. A. .1. 1111.. 

